Dredging machinery



(No Model.) A

2 Sheets-Sheet 1.

A. e. BOTH. DRBDGING. MAGHINBRYL Patented Sept. 26

xxxxx i 9a.* t e e h s .w nv e h s 2 H ml. 0 B C. A

(No Model.)

DRBDGING MACHINERY.

No. 264,851. Patented Sept. 26, 1882.

[71 Vw: far

N. PETERS. Phmumognphnr. washington. D. Cy

UNITED STATES PATENT OFFICE.

ADoLE c. BOTH, on PORTLAND, MAINE.

DREDGING MACHINERY.

SPECIFICATION forming part of Letters Patent No. 264,851, dated September 26, 1882.

Application filed April 26, 1882. (No model.)

.To all whom it may concern Beit known that I, ADoLF G. BOTH, of Portland, in thecountyot Oumberlan d, of the State ot Maine, have invented a new and useful lmprovement in Machinery for Dredging the Bottoms of Navigable Waters; and l do hereby declare the same to bel described in the following specification and represented in the aecompan'ying drawings, of which- Figure 1 is a side elevation of my improved dredging machinery. Fig. 2 is an edge view of it, partly in section, the section being on line I II of Fig; 1. Fig. 3 is an end view of the lubricating-sleeve with one of its chains, to be hereinafter explained. Fig. 4 is a representation of such sleeve, partly in vertical and longitudinal section and partly in elevation, the plane of section bei-ng indicated by the line III lV of Fig. 3. Fig. 5 is a duplex transverse section ot' the sleeve, the plane of section of the upper portion of the said ligure being in the line V VI oi'Fig. 4, While that of the lower portion is on line Vll Vlll of said Fig. 4, and is represented as inverted. Fig-.6 is a horizontal section of one ot' the slide-heads of the shaft p, to be hereinafter described. Fig. 7 is a side view, Fig. 8 a front elevation,

- and Fig.9atop view,of the frame7 E,herein Fig. 9 being on line IX X of Fig. 7. Fig. 10

shows a front and an edge elevation ot' the guide l, making part ofthe frame. a front and edge view of the filling-pieces wn, to' be hereinafter referred to. Fig. 12 shows front and edge views of the plate a, hereinafter mentioned.

The dredging apparatus embracing my present invention is very similar to that set forth in the United States Letters PatentN o. 138,227, granted to me April 29, 1873.

In carrying out my saidpresent invention I have Wholly dispensed with the gears and one shaft and its chain-wheels appertaining to the mechanism described in the said patent, and have applied to the main or stationary shaftc and the chain-wheel W, hereinafter described, what I have termed a self-lubricatingsleeve,7 S, which revolves on the shaft, and is connected with the sliding frame by chains g, and

'in the said gures.

Eig. 11 is serves with such as a windlass mechanism tol enable the main chain wheel W to el'cct the depressing ot' the sliding frame or cross-head C, connected with the buckets by arms or bars, as shown and specified.

The nature of my invention is defined in the claims hereinafter presented.

In Fig. 1 of the drawings the two buckets or scoops are shown at B and l as closed t0-V gether, they by broken or dotted lines being represented as open or raised upward. Each bucket, ateach of its outer corners, is connected with the shaft p ot' a vertically-movable cross head, G, (suspended by a chain, 1),) hy two connectionbars, c, pivoted to the buckets andV upon the shaft p. Furthermore, cach bucket, near its outer corners,.is also connected with a frame, lil, by two bars, g, pivoled to such bucket, and also to the said frame. Pivotsof the bars q and n, with the bucket, areshown at. w in Figs. 1 and 2, while the pivots ot' the bars q, with the frame E, are represented at .fr Besides the bars c and q, each bucket, at or near its inner corners, 1s connected with the frame E or the plates a n, making part thereof', b v connection-bars r, pivoted to the bucket and the frame, the pivots being shown at y and zin Figs. 1 and 2. The

said frame E is composed of the cross-head the two vertical bars l l, the four plates n, and the two filling-pieces m, all being as and arranged and connected substantially as repre-V sented.

Within the frame E, at its lower part, is a shaft, a, which extends across and makes part of the said frame, but is not revoluble therein. 0n this shaft,concentrically, and to revolve thereon, is the seltlubricating sleeve or bar: rel, S, which, besides being bored axially to receive the shaft, has a chamber, d, in its middle and stuffing-boxes b c at its ends, the part c of .each box being t0 receive an annular st-ul'- A ing to encompass the shaft. An induct, e, provided with a screw-stopper, f, and arranged as shown in-Fig. 4, enables the chamber d to be supplied with a charge of oil. As the sleeve or barrel S, when the dredgingmachine is in use, goes in and out of the Water, the propriety of having means of lubricating its bearing-surfaces on the shafta and of keeping such free from water will readily be seen. I therefore provide the part S with the oil-chamber and thestufng-boxes. rEhe oil within the chamber d will lubricate and keep oiled for a great length of time the bearing-surfaces of the sleeve and shaft.

The revoluble sleeve S is provided with projections or lugs, as shown at 7c, to receive the pin i for connecting it to thel two chains g, the pin being arranged in the sleeve, the lugs, and the chains, as shown in Figs. 2, 3, and 4.

'The chain-wheel W is fitted coneentrically on and is keyed to the sleeve S, and such sleeve has fixed to it, as shown at t' in Fig. 3, two chains, g, which depend from bars or long links a', extending down from the crosshead C, as shown in Fig. 2. Another chain, G, fastened to the grooved periphery of the wheel W, andled upward in rear of and againsta guideroller, b, projecting from a cross-head, c', of the frame E, serves to revolve the wheel W. and ot' course the sleeve or barrel S, in order to wind on the latter the chains g, and thereby depress the cross-head C and the shaft p on two vertical and parallel guides, l, fixed in and to the frame E. By properly` moving the cross-head C the bars o and q will cause thev buckets to be swung into their outward positions, ready for excavating earth on their being next drawn toward cach other.-

'lhe shaft p has a screw, d, at each end of it. such screw being toV screw into a plate, s. (See Fig. 6.) This plate is placed across the inner side of the guide Z, and is connected with a plate, a, arranged on the outer side of such guide, by screws e going through the said platesfand intervening pieces t, arranged as shown. By such means the shaft p, at cach end of it, is adapted to slide upward and downward on one ofthe guides l.

The two outer wooden poles,f, ofthe frame E extend within and are fastened to socketerl pieces g. Each of these pieces g extends down between two plates,n,arranged as shown in Figs. l and 2, one of the guides l and a {illing piece or plate, m, being also arranged and secured between the said plates by screw-bolts and nuts thereof.

In opening and closing the buckets the pivots w move nearly in vertical directions. To accomplish such movements the pivots y of the bar r move in nearly horizontal directions, all of which effects a substantially even distribution ofthe power applied to close the buckets. For equal intervals of the traverse of the shaft p, as marked 0, 1, 2, 3, 4, 5, 6, 7, and 8 on one ofthe barsf ot the frame E, the corresponding positions ofthe cutting-edges of the buckets are shown, and also marked in like manner in the curved and dotted lines, which in Fig. 1 denote the paths of lnotion of such eutting-edges. These edges will be moved through the earth to be dredged with very nearly an evenly-dist1ilmted power from the beginning to the end of each ot' the cuts.

By dispensing with the gears, one shaft, and chain-wheel, as used in my aforesaid patented dredge, and using the self-lubricating andgrevoluble windlass or sleeve S on the shaft a, I not only materially simplify the dredge, but canse it to operate to much better advantage.

Having thus described my improved mechanism for dredging, what I claim therein as of my present invention is as follows, viz:

1. The combination of the revoluble windlass or sleeve S, provided with the end stuffingboxcs, the oil-chamber and its induct, and the connection-chains g with the frame E, shaft a, cross-headG, buckets B, and their connection bars 9^ q c, and with the Wheel W, the said wheel W and cross-head C being provided with the chains D and G, and all being adapted and to operate substantially a-s set forth.

2. The revoluble sleeve S, provided with the lugs k, and also with the bolt t', arranged in it, and the said lugs, substantially as represented, in combination with the chains g, coupled to such sleeve by means of such bolt and lugs.

3. The shaft p, having at each end of it a screw, d', screwedinto the plate s, in combination with the plates s and u, and the tillin'gpieces yt, arranged with and applied to the guides I., all being substantially as set forth.

4. rlhe combination of the socket-pieces g', plates n, and lilling-pieces m with the bars f and the guides Z ot' the frame E, all being arranged a-nd adapted substantially as set forth.

ADOLF C. BOTH.

Witnesses:

ROBERT SAUTHOFF, BRON B. MANsFiELD. 

